diff --git a/dbcon/joblist/tuplehashjoin.cpp b/dbcon/joblist/tuplehashjoin.cpp
index ebc657d58..1f164a11f 100644
--- a/dbcon/joblist/tuplehashjoin.cpp
+++ b/dbcon/joblist/tuplehashjoin.cpp
@@ -132,8 +132,9 @@ TupleHashJoinStep::~TupleHashJoinStep()
     if (ownsOutputDL)
         delete outputDL;
 
-    for (uint i = 0 ; i < smallDLs.size(); i++)
-        resourceManager->returnMemory(memUsedByEachJoin[i], sessionMemLimit);
+    if (memUsedByEachJoin)
+        for (uint i = 0 ; i < smallDLs.size(); i++)
+            resourceManager->returnMemory(memUsedByEachJoin[i], sessionMemLimit);
 
     //cout << "deallocated THJS, UM memory available: " << resourceManager.availableMemory() << endl;
 }
diff --git a/dbcon/joblist/tupleunion.cpp b/dbcon/joblist/tupleunion.cpp
index f62c94b9d..85f90860b 100644
--- a/dbcon/joblist/tupleunion.cpp
+++ b/dbcon/joblist/tupleunion.cpp
@@ -94,7 +94,6 @@ TupleUnion::TupleUnion(CalpontSystemCatalog::OID tableOID, const JobInfo& jobInf
     outputIt(-1),
     memUsage(0),
     rm(jobInfo.rm),
-    allocator(64 * 1024 * 1024 + 1),
     runnersDone(0),
     distinctCount(0),
     distinctDone(0),